<!DOCTYPE html>
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<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <body>
        <?php
       $score=68;
       if($score>90 and $score<=100)
           echo "*****";
       elseif ($score>=80 and $score<90)
           echo "****";
       elseif ($score>=70 and $score<80)
           echo "***";
       elseif ($score>=60 and $score<70)
           echo "**";
       else 
           
       echo "";
        ?>
        <table width="200" border="1">
  <tbody>
    <tr>
      <td width="126" align="center"><h3>成绩等级</h3></td>
      <td width="58">&nbsp;</td>
    </tr>
    <tr>
      <td>优秀</td>
      <td>&nbsp;</td>
    </tr>
    <tr>
      <td>良好</td>
      <td>&nbsp;</td>
    </tr>
    <tr>
      <td>中等</td>
      <td>&nbsp;</td>
    </tr>
    <tr>
      <td>及格</td>
      <td>&nbsp;</td>
    </tr>
    <tr>
      <td>不及格</td>
      <td>&nbsp;</td>
    </tr>
  </tbody>
</table>
    </body>
    
</html>
